Oilfield blending unit



FIG. 1 is a top left perspective view of an oilfield blending unit that embodies the ornamental design;

FIG. 2 is a front elevation view of the oilfield blending unit;

FIG. 3 is a rear elevation view of the oilfield blending unit;

FIG. 4 is a left side elevation view of the oilfield blending unit;

FIG. 5 is a right side elevation view of the oilfield blending unit;

FIG. 6 is a top plan view of the oilfield blending unit; and,

FIG. 7 is a bottom plan view of the oilfield blending unit.

The broken lines show portions of an oilfield blending unit which form no part of the claimed design. 

CLAIM The ornamental design for an oilfield blending unit, as shown and described. 